Networking Fundamentals · lesson 17 of 17 · 15 min

Common network problems

summary: Common problems include incorrect addressing, a missing gateway, DNS failures, disconnected cables, and blocked traffic. Check the simplest local evidence before escalating.

question: Which setting is needed to reach a different network?

options:

• Default gateway
• Desktop wallpaper
• MAC label
• Browser history

correct: Default gateway

explanation: The default gateway forwards traffic beyond the local network.

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Previous lesson: Using ping, traceroute, and nslookup
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